Hair dryer



FIG. 1 is a top view showing my new design for a hair dryer;

FIG. 2 is a bottom view thereof;

FIG. 3 is a left side view thereof, the barrel attachment shown in dotted lines forming no part of the invention;

FIG. 4 is a right side view thereof;

FIG. 5 is a front view thereof; and,

FIG. 6 is a rear view thereof. 

The ornamental design for a hair dryer, as shown and described. 